Vehicle Aerodynamic Drag for Tire Shape Parameters Using Numerical Analysis

Lee, Jaehak; Park, Sungoh; Kim, Moon-Sang; Kim, Yongnyun; Oh, Byoungkeun

doi:10.1007/s12239-022-0031-0

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…При проведении анализа безопасности реакторных экспериментов в Филиале ИАЭ РГП НЯЦ РК используется лицензионное программное обеспечение ANSYS FLUENT [1]. Данная программа предназначена для выполнения теплофизического и гидравлического анализа систем [2][3][4][5], а также для решения задач аэродинамики и моделирования химических реакций [6][7][8][9][10].…”

Section: введение настройка решателя Ansys Fluent через графический и...unclassified

Application of the Text Interface of the Ansys Fluent Program for Simulation of the Thermophysical State of a Typical Experimental Device

Kabdylkakov

Suraev

Irkimbekov

2022

jour

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The paper is dedicated to development of log of the ANSYS FLUENT program text commands. Although this program has well-developed and easy-to use graphical interface, command logs allow to conduct the configurations of the solver, optimizing the process of calculation justification safety of reactor experiments conducted at the “Institute of Atomic Energy” Branch of the RSE “National Nuclear Center of the Republic of Kazakhstan” (IAE Branch RSE NNC RK). Command logs allows to control the command to save the ANSYS FLUENT program solver as code in a separate file, which can later be used for other calculations. Command log allows to save settings the ANSYS FLUENT program solver as program code in a separate file, which can later be redacted and used for other calculations. Also, this would enable improving the group work of employees above one project, facilitate the exchange process of solver parameters and promptly make amendments and corrections. In the framework of this work, a technique for constructing a command log was developed for modeling thermophysical state of experimental devices in reactor experiments. The developed technique was tested on the example of solving a thermophysical task with a typical ED.

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Section: введение настройка решателя Ansys Fluent через графический и...unclassified

Application of the Text Interface of the Ansys Fluent Program for Simulation of the Thermophysical State of a Typical Experimental Device

Kabdylkakov

Suraev

Irkimbekov

2022

jour

View full text Add to dashboard Cite

show abstract

“…При проведении анализа безопасности реакторных экспериментов в Филиале ИАЭ РГП НЯЦ РК используется лицензионное программное обеспечение Ansys [1]. Данный комплекс программ предназначен для выполнения большого числа инженерных расчетов, в том числе для теплофизического и гидравлического анализа систем [2][3][4][5], а также для решения задач аэродинамики и моделирования химических реакций [6][7][8][9][10].…”

Section: Introductionunclassified

Modeling of Heat-Strength Interaction of Fuel and Structural Materials of an Irradiating Device in the Ansys Software

Kabdylkakov,

Suraev

2023

jour

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In the work, a conjugate thermo-strength analysis was carried out for the ID-7 experimental device (ED) model. The calculation was carried out using bundles of Ansys Fluent and Static Structural programs in the Ansys Workbench environment using the Fluid-Structure-Interaction (FSI) method. The calculation of the thermal state of the ED was carried out taking into account the results of neutron-physical calculations, using the user function UDF (User Defined Function) of the Ansys Fluent program. According to the results of the non-stationary calculation, the temperature values are obtained, which vary in time and in the height of the ED. Based on the results of the thermophysical calculation, a strength calculation was carried out in the Static Structure program. Distributions of the magnitude of thermal expansion and mechanical expansion (von-Mises) in the elements of the ED are obtained.

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Flow characteristics and wake topology of two-seat convertibles

Lai¹,

Zhu

Feng

et al. 2023

Physics of Fluids

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This study aims to clarify the flow characteristics and wake structure of convertible vehicles. Numerical simulations are performed to obtain a preliminary visualization, and the potential vortical motion characteristics are investigated by examining the Q-criterion across multiple cross-sections. Comparisons between numerical and experimental results validate the reasonableness of our numerical model. The predominant wake topology of a two-seat convertible is obtained in terms of the location, shape, and spin direction of the vortices. We observe a "nook" vortex that is triggered by the flow acceleration induced by the pressure gradient near the windshield step, provoking undesirable aeroacoustic noise and degrading the cabin comfort. Complicated A-pillar vortex dynamics are revealed, with small vortices that are shed into the cabin and impinge the seats, eventually forming a long tail structure above the back of the vehicle. Moreover, periodic fluctuations of the windshield vortex are induced by the Kelvin-Helmholtz instability, significant impacting the streamwise wake. Ultimately, the combined motion characteristics of the A-pillar and windshield vortices exert undesirable effects on the aeroacoustic noise and drag, suggesting fundamental mechanisms for achieving optimal energy-saving and acoustic convertibles in the future. Based on the wake topology and the vortical generating mechanism, approaches are proposed to reduce the drag and aeroacoustic noise by impeding the flow over the door into the cabin and modifying the shape of windshield step, and lengthening the windshield in stream direction.

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Vehicle Aerodynamic Drag for Tire Shape Parameters Using Numerical Analysis

Cited by 4 publications

References 12 publications

Application of the Text Interface of the Ansys Fluent Program for Simulation of the Thermophysical State of a Typical Experimental Device

Application of the Text Interface of the Ansys Fluent Program for Simulation of the Thermophysical State of a Typical Experimental Device

Modeling of Heat-Strength Interaction of Fuel and Structural Materials of an Irradiating Device in the Ansys Software

Flow characteristics and wake topology of two-seat convertibles

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